This year's regular parliamentary audit opened on Oct. 6, with standing committees set to examine ministries and public bodies for about a month. Rival parties are expected to clash across committees over the nomination of Supreme Court justices, September's landmine explosion in the Demilitarized Zone and investment in the United States.

The most closely watched session on day one was the Legislation and Judiciary Committee's audit of the Supreme Court. According to SBS, Chief Justice Cho Hee-dae attended in the morning, read only his prepared opening remarks as is customary, and refused to take the witness oath. The long-standing practice of the chief justice leaving after his remarks sparked a clash between the parties from the outset.

Custom or duty: the judicial oversight debate reignites

The dispute over how the chief justice appears at audits is not new. At the first audit under the Lee Jae-myung government last year, the committee kept Cho in the room as a witness for about 90 minutes of questioning. Cho then submitted a written opinion arguing that cross-examining judges as witnesses about trials could chill impartial judgment and is rarely seen in countries with a separation of powers.

The ruling party argues that the judiciary, too, must submit in good faith to oversight by the people's elected assembly, and that the chief justice should answer questions about appointments and major rulings in person. The opposition and voices inside and outside the courts counter that the custom is a minimum safeguard for judicial independence and should be respected.

On the same day, the Seoul High Court held the 19th hearing in the appeal trial of former President Yoon Suk Yeol and seven others on charges of leading an insurrection, as political tension around the judiciary played out both inside and outside the audit hall.

DMZ mine and financial hacks: security and daily life under scrutiny

At the defense committee, the Sept. 21 landmine explosion in the DMZ, which seriously injured two soldiers, is the top issue. Defense Minister Kang Shin-chul has said that after three joint on-site investigations with the UN Command, the mine was judged to have been planted by the North Korean military and that it 'is indeed a violation of the armistice agreement.' The opposition plans to grill the government on readiness and North Korea policy, while the ruling party is focusing on establishing the cause and preventing a recurrence.

Relevant committees are expected to take up the string of hacks in the financial sector. Prime Minister Han Sung-sook has ordered a complete overhaul of security systems, and police have formed a dedicated team and opened a formal investigation. Responsibility for protecting customer data and the regulators' response are likely to face intense questioning.

Investment in the United States is also on the agenda of industry and foreign affairs committees, with the parties sharply divided over how large investment pledges tied to tariff talks will be carried out and how they will affect domestic industry.

A third perspective

How far a legislature may scrutinize the courts is not a uniquely Korean dilemma. In the United States, federal judges rarely testify before Congress about individual cases, and in Taiwan the scope of the Judicial Yuan's reports to the Legislative Yuan has long been contested. Where to draw the line between democratic oversight and judicial independence is ultimately a matter of refining both rules and customs. For ethnic Chinese and other foreign residents in Korea, trust in a stable judiciary also bears directly on daily life. Whether the month-long audit moves beyond partisan fighting to a debate on institutional reform remains to be seen.